dubbo-admin-2.5.4在tomcat中部署失败的问题

最近在研究dubbo，避免不了从最简单的开始。按照网上教程启动zookeeper,启动tomcat时总是报错，

ERROR context.ContextLoader - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'uriBrokerService': Cannot create inner bean '(inner bean)' of type [com.alibaba.citrus.service.uribroker.impl.URIBrokerServiceImpl$URIBrokerInfo] while setting bean property 'brokers' with key [0]; nested excepti
on is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#25': Cannot create inner bean 'server' of type [com.alibaba.citrus.service.uribroker.uri.GenericURIBroker] while setting constructor argument; nested exception is org.springframework.beans.fact
ory.BeanCreationException: Error creating bean with name 'server': Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'URIType' of bean class [com.alibaba.citrus.service.uribroker.uri.GenericURIBroker]: Bean property 'URIType'
is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:230)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:122)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:287)

查了很久，终于发现问题所在，现在记录下

原来是我用的jdk版本太高，jdk8, dubbo默认用的spring版本比较旧，冲突导致，作如下修改即可

1、webx的依赖改为3.1.6版；

<dependency>
<groupId>com.alibaba.citrus</groupId>
<artifactId>citrus-webx-all</artifactId>
<version>3.1.6</version>
</dependency>

2、添加velocity的依赖，我用了1.7；

<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity</artifactId>
<version>1.7</version>
</dependency>

3、对依赖项dubbo添加exclusion，避免引入旧spring

<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>${project.parent.version}</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
</exclusions>
</dependency>

4、webx已有spring 3以上的依赖，因此注释掉dubbo-admin里面的spring依赖

<!--<dependency>-->
<!--<groupId>org.springframework</groupId>-->
<!--<artifactId>spring</artifactId>-->
<!--</dependency>-->

重新编译dubbo放tomcat运行，成功启动！